What is the legal limit for blood alcohol concentration (BAC) for drivers over 21?

The legal limit for blood alcohol concentration (BAC) for drivers over 21 in Wyoming is 0.08%. This standard aligns with laws in many other states and serves as the threshold for determining whether a driver is legally impaired due to alcohol consumption. When a driver reaches a BAC of 0.08% or higher, they are subject to charges of driving under the influence (DUI), as this level of alcohol in the bloodstream significantly affects a person's ability to operate a vehicle safely.

The other options represent limits that are lower than the established legal threshold for adult drivers. A BAC of 0.05% is typically associated with lower-risk driving but still indicates impairment, while thresholds like 0.10% and 0.04% are above or below the legal limit for most drivers over 21, potentially leading to legal consequences if enforced under different conditions or laws for certain types of drivers, such as commercial drivers or those under the legal drinking age. It’s critical for drivers to adhere to the 0.08% limit to promote road safety and avoid severe penalties.